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.Dec'. 16, 1930 GAS HEATER FOR CURLING IRONS Filed Ma 31 7 I I I I I I I I I I I u IIIIIIIIIIIIII Patented Dec. 1 6, 1930 UNITED STATES GUILLAUME' DUCART, OF PARIS, FRANCE GAS HEATER FOR CURLING IRONS Application filed May 31, 1927, Serial No. 195,519, and in France June 4, 1926.

provide a device of this character so constructed that the heating action of the device will cease when a predetermined temperature is reached.

A further object of the invention is to provide a device of this kind constructed in such manner that as soon as the curling iron has been heated to a predetermined temperature, the gas supply will be furnished a pilot jet only in order to prevent the predetermlned temperature from being exceeded.

This heater is essentially characterized by the feature that it comprises one or more heating boxes for holding the irons to be heated, a gas burner plate and a thermo-regulator or thermostat controlling the admission of gas to the said plate. In order to make the invention clearly understood and by way of example, one embodiment is hereinafter described and illustrated diagraminatically, in the accompanying drawings in which:

Fig. 1 is a vertical central section through an iron heater according to the invention.

Fig. 2 is a cross section taken along the line m-a" in Fig. 1.

Fig. 3 is an enlarged sectional view through the valve mechanism.

The heater comprises end plates 1 between which is engaged the side plates and top plate 2 and forms in conjunction with the plates 1, a closure structure or casing. Supported by the end plates 1 is a heating box 3 for receiving the curling iron. Mounted below the box 3 is a burner plate 4:, the gas supply thereto being controlled by a thermostat consisting of a brass tube 5 which is mounted in a sleeve 6, said sleeve enclosing the box 3. Freely movable in the tube 5 is a thermal rod 7, said rod being operable to control the supply of gas. Associated with the casing is a cylindrical body 8 having a gas admission pipe 9 connected therewith for supplying the burner plate 4 with fuel.

In the interior of the body 8 is disposed a block in which is slidable a rod 12 disposed in alignment with the rod 7, said block 11 comprising an annular crown shaped aperture or distributing crown 13 into which lead distributing ducts 1 1; 15 is a circular seat formed on the block 11 upon which seats a plate valve 16 and with which the adjacent end of the rod 12 coacts, said plate being subjected to the action of a spring 17 mounted in a fixed cup 18, said cup pressing against the block 11 and adjustable through the medium of a control knob 19 adapted to be screwed inwardly or outwardly at will, the inner end of which presses upon the cup 18, said cup having calibrated orifices 20 formed therein and corresponding orifices 21 formed in the valve 16.

The rod 12 is acted upon by a spring 22 which presses at one end upon the end of the recess 23 in the block 11 and at the other end against a shoulder 24 on the said rod, the

spring tending constantly to push the rod 7 towards the left (Fig. 1).

lVith the device thus constructed, during normal working the valve 16 is not engaged upon the seat 15, so that the gas led through the pipe Qpasses through the orifices 20 in the cup 18 and then through the annular space between the valve 16 and the cup 18 and under the valve 16, and thence through the orifices 21, and through the distributing crown 13 and the ducts 14 to enter the pipe 10. During the heating, the expansion of' the sleeve 5 being greater than that of the rod 7 the rod 12 which abuts against the latter can move to the left under the action of the spring 22, and the valve 16, against which the end of the said rod presses can also move in the same direction under the action of the spring 17. For a predetermined temperature the rod 12 is displaced by an amount such that the valve 16 is pressed against this seat 15, closing the distributing crown 13; and the supply thus takes place through only the orifices 20 and 21 and through a longitudinal channel or groove 12'. in the rod 12, and the gas flame accordingly assumes the proportions of a pilot jet.

It will be understood that in order to arrange for the flame to be lowered to a predetermined temperature it will be suflicient to actuate the knob 19, a finger 25 rigid with this knob moving in front of a scale carried upon a dial 26, the rotation of the knob displacing the cup 18 and the block 11. This type of thermostat is also of equal interest for use With other apparatus or plant in Which the problem of regulating a temperature occurs under similar conditions, such,

- for example, as air heaters or dryers etc. 7

What I claim is:

1; A gas iron heater comprisinga plurality of spaced supporting members, a gas burner plate mounted in said supporting members, a heating box mounted in said supporting members, a thermo-regulator disposed'adjacent to the side of the heating box opposite the gas burner, a sleeve enclosing J plate.

said thermo-regulator and said heating box, and fuel control means associated With and operated by said thermo regulator.

2. A gas iron heater comprising aplurality of spaced supporting members having plates disposed on the top and sides forming a closed structure, a gas burner plate dis-v posed in said structure, a heating box disposed above said burner plate, a thermoregulator disposed adjacent to the side of the heating box opposite the gas burner, a sleeve enclosing said heating box and said thermoregulator, fuel control means associated With and operable by said thermo-regulator, gas supply means connected to said fuel control means, and agas supply conduit connecting said fuel controlmeans and said gas burner '3. A gas iron heater comprising a plurality of spaced supporting members, a gas burner plate mounted in said supporting members, a heating box mounted in said supporting members in close proximity to said gas burner plate, an expansion tube closed at one end mounted in said supporting mem-' bers adjacent to the side of the heating box opposite the gas burner, a sleeve enclosing said heating box and said expansion tube, an

expansion rod movably disposed in said ex pansion tube, a valve associated with and operable by said expansion rod, means for, manually adjusting said valve, a gas supply conduit connecting said valve and said gas burner plate, gas supply means connected to said valve, and means in said valve for supplying gas to a pilot jet.

.' In testimony whereof I afiix my signature.

GUILLAUME DUCART. 

